Writing & History. History is impossible without the written word as one would lack context in which to interpret physical evidence from the ancient past. Writing records the lives of a people and so is the first necessary step in the written history of a culture or civilization.
Lesson Summary. In review, chemical energy is energy stored in chemicals'. Energy is 'the ability to do work. Chemical energy is a type of potential energy that is energy due to the position of an object or objects.
Chemical Energy. Chemical energy is the energy that is stored in chemical form, in the bonds of atoms and molecules. Coal, biomass, petroleum products are some examples of stored chemical energy. For instance, when we burn wood or coal, the stored chemical energy gets converted into thermal energy.